The #WeAreCorbyn hashtag reached No.3 worldwide and No.1 in UK Twitter trends on Thursday, as supporters fought back against what they see as anti-Semitic “smears” against Labour leader Jeremy Corbyn.

It will be seen as a welcome boost for Corbyn, who has been under intense pressure over recent weeks from sections of the mainstream media and the political establishment, including some of his own Labour MPs, on the issue of anti-Semitism.

Labour grassroots activists, MPs and prominent left-wing political commentators all took part in the show of solidarity for Corbyn. Labour leader’s key allies in the shadow cabinet, John McDonnell, Diane Abbott and Angela Rayner were just a selection of Labour MPs to join in the chorus on Thursday evening.

Shadow chancellor and close confidant, McDonnell tweeted that he was “proud to stand in absolute solidarity with my comrade and friend, Jeremy Corbyn.”

#WeAreCorbyn I am proud to stand in absolute solidarity with my comrade and friend, Jeremy Corbyn, who has stood with me and so many others for decades in campaigns for peace, justice and against all forms of oppression and discrimination.

Left wing group Jewish Voice for Labour, together with other Jewish voices, demonstrated their support for the opposition leader who has been the target of severe criticism from certain parts of the Jewish community.

It’s deeply offensive and deeply dehumanizing to me as a Jewish person that reactionaries try to use false allegations of antisemitism to smear progressive/socialist candidates. Jews have a proud history of radical convictions about #justice. For that reason #WeAreCorbyn.

Left-wing Guardian journalist, Owen Jones used the #WeAreCorbyn hashtag to claim UK Labour’s sister parties in Europe were in turmoil due to being “wedded to a discredited establishment politics” and that “only a radical alternative can beat right wing populism and fascism – that’s what Corbynism represents.”

Labour’s sister parties in Europe are facing political annihilation because they’re wedded to discredited establishment politics. Only a radical alternative can beat right wing populism and fascism - that’s what Corbynism represents #WeAreCorbyn

When I later found out about what Hodge had said to him shortly before he gave the speech, I thought the contrast between the brutality of that incident and the tenderness of this one was poignant. #WeAreCorbyn

Not my words, but I was at the same event, first time I heard Corbyn speak live. In the heat of a leadership contest he spoke about us, the people, our hopes and fears, the wrongs we could right together. No other politician comes close to his genuine compassion. #WeAreCorbynpic.twitter.com/ivPESoS0na

It comes as the Independent reports that Corbyn has reached out to the Jewish Museum in London to give a speech to address the current anti-Semitism “crisis” within his party.

It's understood the Jewish Museum has, so far, refused to agree to the Labour leader’s request. The paper reports that the chief executive of the Jewish Museum described the situation as “delicate,” adding she didn’t want to agree to anything that “will make things worse.”